Centrifugal cream-separator.



No. 648,2l6. Patented Apr. 24, 1900.

0. OHLSSON. CENTBIFUGAL CREAM SEPARATOR.

(Application filed Oct. 31, 1889.)

( No Model.)

. INVENTOR 6m; 64- 1 ,1

BY E U6M7 ATTORNEY WITNESSES rrrcsl PATENT OLOF OI-ILSSON, OFSODERTELJE, S /VEDEN.

CENT-RIFUGAL CREAM-SEPARATOR.

sP-EcIFIcAr'IoN forming part of Letters Patent No. 648,216, dated April24, 1900. A Application filed October 31, 1899. Serial o. 735,385. camodeL) To aZZ whom, it mag concern.-

Be it known that I, OLOF OHLssoN, a citizen of the UnitedStates,residing at Sodertelj e, p

in the Kingdom of Sweden, have invented cer 'tain Improvements in Linersor Insets for Centrifugal Apparatus, of which the following is aspecification. I

This invention relates to the class df'devices to be placed in the drumof a centrifu gal apparatus and known as insets -or liners; and theobject is to so construct and form the liner that in the separatingprocess the liquid flowing outward from-the drumaxis will pass throughthe several intervening separating chambers or spaces in the drum insuch a manner thatit will not disturb the separation going on in thesespaces and the separation of the heavier from the lighter portions ofthe liquid with a given centrifugal force acting thereon will beenhanced.

In the accompanying drawings, which illus trate an embodiment of theinvention, Figure 1 is a vertical axial section of a centrifugalapparatus containing this invention; and

Figs. 2 and 3 are horizontal sections of the same, taken, respectively,at lines as and m in Fig. 1.

1 is the drum of a centrifugal apparatus, and 2 is the usual axial pipeor tube through which the liquid to beseparated is supplied This pipeterminates below at the space 3, formed by the double bottoms of thedrum and from which space the liquid rises into the separating-chamberthrough apertures 4.

The liner consists of hollow truncated pyramids 5, set one withinanother and provided at their upright corners or angles with rows ofapertures or perforations 6. These pyramids are so arranged or placedwith relation to one another that the upright salient angle or corner ofone pyramid will be opposite to a plane side of the next adjacentexterior pyramid, or so that radii from the drum-axis which pass throughthe corners orangles of one pyramid will impinge atright angles on theinner-faces of the sides of the next adjacent exterior pyramid. Theadvantage of this construction is that the jets of liquid in flowingoutward through the rows of perforations .6 strike the plane surfaces ofthe next outer pyramid and are spread over the surface, whereby theseparation going on therein during the passage through .the intermediatespace is not disturbed and the lighter particles of the liquid stillcontained in it are the more readily separated. In Fig. 3 the arrows '7illustrate the flow of the liquid. As the lat-v ter, thrown outwardthrough the apertures 4, strikes the inner plane surface of the side ofthe adjacent external pyramid perpendicularly it is divided intotwocurrents, which flowlaterally in opposite directions to the outlets atthe angles of that pyramid. It will be readily understood that thedispersion of the liquid in a thin layer or film over the plane surfacewill allow the lighter particles therein to separate and rise along theouter surfaces of the pyramids to the outlets pro vided for them.

In order that the pyramids may occupy their proper position, as shown,in relation to one another when they are inserted into one another, thebest plan is to provide the inletpipe 2 with a longitudinal rib orspline 8 and to provide corresponding recesses in the up-' per edges 9of the pyramids, which edges are made to embrace the said pipe, saidrecesses, together with the spline, serving as guides for the pyramids.A similar guide 10 may likewise be provided at the bottom edges of thepyramids. The latter edges'are shown bent outward in such a mannerthateach of them will fit tightly against the inside wall of the centrifugaldrum, and consequently one or more of the pyramids can be taken outwithout permitting the liquid to ascend between the bottom edges of theremaining pyramids and the wall of the drum.

Having now described my invention, what I claim as new, and desire tosecure byLetters Patent, is

1. A liner or inset for a centrifugal separator, consisting of two ormore hollow pyramids placed upright, one within the other, each of saidpyramids having in it apertures or perforations along its angles orcorners, and the several pyramids so placed,relatively, that the angleof one pyramid will be opposite to the plane face of the other nextadjacent, substantially as set forth.

2. A liner or inset for a centrifugal apparatus, consisting of aplurality of truncated,

hollow pyramids, with apertures or perforations along their angles orcorners, said pyramids being so placed as to be concentric, one Withinanother, With the angle or corner of one pyramid situated directlyopposite to the cent-er of a plane side of that pyramid next adjacent,substantially as set forth.

3. The combination with the drum Land the axial supply-pipe 2, of thehollow, truncated pyramids 5, set concentrically in the drum and onewithin another, said pyramids having apertures 6 along their angles orcorners, and so placed, relatively, that the angle of 1 one pyramidshall be opposite to the plane side of the next adjacent pyramid,substan' tially as set forth.

In Witness whereof I have hereunto signed my name in the presence of twosubscribing Witnesses.

OLOF OHLSSON.

Witnesses:

ERNST SVANQVIST, HANS B. OHLSSON.

